ARB Simpson III Rooftop Tent Installation

With the ARB Simpson III Rooftop Tent in the driveway I first inspected the packing looking for any external shipping damage and found one corner of the box crushed. After photos of the corner I finished unpacking the tent  which I found to be double boxed with the outside box being heavy duty. Even with the external damage the packing protected the tent well and I found no problems.

ARB Simpson III Roftop Tent Boxed

With the tent unpacked I found the stainless steel mounting hardware in a small cloth bag and the rails inside the tent.

Ready to begin the install

Wanting to mount the tent on my M416 military trailer I spent an afternoon constructing a rack.  Following ARB’s instructions I cut the cross members down to allow them to be mounted across the rack. The original bolts were not long enough for my rack so a quick trip to the hardware store provided longer ones. Placing the tent on the rack took two people with one on each side. The rack was only about 4 feet off the ground so I can say that lifting the tent onto the roof off a lifted truck is going to be a chore.

Trailer rack ready for tent

The tent mounting system allows the tent to easily be centered on the rack. Some rack systems allow the tent to be mounted directly without the provided rails. With the tent set I tightened the rail mounts.

Tent cross member mounted to rack

Installing the ladder took only a few minutes.

Ladder brackets installed

I opened the tent and marked on the ladder where I needed additional holes for the adjustment stop. 

Ladder with my additional stop

After drilling the additional stop holes I opened the tent , lifted  the mattress, and finish tightening the tent mounting bolts.

Ladder Bracket bolts

The final part of the installation was to mount the tent cover on the tent platform. The design allows the cover to neatly slide into a groove on the hinge side of the platform.  Even though the installation does not call for it ,I am going to use two small sheet metal screws to keep the cover in place.

Tent closed showing Velcro straps

With the cover installed I proceeded to stow the tent,  ready to head out for a weekend excursion.

Tent closed and ready to go.

The installation instructions were clear and concise with quality hardware provided. Though I completed most of the installation by myself, a second person was needed to set the tent in place on the rack.

ARB Simpson III Rooftop Tent Setup
ARB Simpson III Rooftop Tent Detailed Review
ARB Simpson III Rooftop Tent Annex



Tomas has lived in Colorado since age 5. Having grown up on the Western Slope of Colorado lots of time was spent in the Desert Southwest. Tomas' father introduced him to the love of 4 wheeling at an early age in the high mountains around Aspen, Colorado. While an avid Mountain Biker, Tomas and his Family enjoy adventures in the mountains and desert in the remote locations that can only be reached by 4wd. Day hikes are always a must when on the family trips. While enjoying outdoor activities he wants to share his love as a certified 4wd trainer and ski instructor. Tomas also enjoys caving and cave exploration. Tomas currently resides in Colorado Springs. 


  5 comments for “ARB Simpson III Rooftop Tent Installation

  1. Rick
    January 1, 2010 at 2:02 PM

    Hello Tomas-

    First off, thanks for the review, it was very helpful. Second, I wanted to put together the same kind of set-up that you have and had a quick question on the install.

    How do you raise the support bars for the base of the tent, when the tent is installed. From what I understand, the tent has some weight and was wondering how hard it would be to have the support bars be lowered for transport and raised for camping.

    Any pointers on this.

    Thanks in advance.


    • January 7, 2010 at 9:53 AM

      I pull the pins out and lift the bars while standing on the trailer then re-insert the pins. The Hi-Lift jack could also be used to lift the bars.

  2. eduardo
    April 7, 2012 at 6:30 PM

    hey dude, how much cost you that tent, im from venezuela and i need one! thx

    • April 9, 2012 at 11:02 AM

      I have no clue what the cost would be in Venezuela. I recommend you look ARB ( site and see if you can locate an international dealer.

  3. Sum
    February 13, 2013 at 1:22 AM

    Thanks for ur review, just bought one and went camping on the weekend. Love how it’s so easy to set up and how it catches a nice cool breeze. The only problem we have is getting it up onto the 4wd. It’s just so heavy. Any ideas on how to make this task a little easier on my back?

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